Abstract: Disclosed is a material for forming a protective layer, a protective layer employing the material and a PDP with the protective layer. Unlike conventional protective layers which employ MgO created in conditions of pressurized artificial gas, the instant protective layer uses MgO created by heating Mg and allowing it to oxidize naturally in air. The result is MgO with fewer defects that is more effective as a protective layer in many uses, such as in a PDP. The instant MgO also shows many specific spectral characteristics and contains impurities in amounts of less than about 2 ppm each. Also disclosed is a PDP which takes advantage of the advantages of the inventive protective layer.

Abstract: Provided is a material for forming barrier ribs, barrier ribs formed using the material, and a PDP comprising the barrier ribs. The material is photosensitive and made from a glass frit composition which is environmentally friendly (no Pb or Bi) and also prevents light scattering. The primary component of the glass frit is P2O5. Other components can be included in the barrier rib forming material such as an alkali-based metal oxide, B2O3, SiO2, etc. The barrier rib formed of the glass frit can additionally include a photosensitive organic material which may include a crosslinking agent, a polyfunctional monomer or oligomer, a photo initiator, a binder and an additive. A method of forming the barrier ribs comprising the glass frit composition is also provided as is a PDP including such barrier ribs.

Abstract: A photosensitive paste composition includes: a fluoride sol dispersed in an organic material; and an inorganic material, wherein an average refractive index of the fluoride sol N1 and an average refractive index of the inorganic material N2 satisfy Mathematical Formula 1 below: ?0.2?N1—N2—0.2. ??Mathematical Formula 1 By using the photosensitive paste composition, a barrier rib pattern for a high-resolution and high-precision PDP can be prepared through a single light exposure and a PDP having high brightness can be manufactured since the barrier ribs have high reflectance compared to conventional barrier ribs.

Abstract: A protective layer of a plasma display panel includes smoky magnesium oxide, the smoky magnesium oxide having single crystal magnesium oxide with a plurality of cavities therein.

Abstract: Provided are a protecting layer for a plasma display panel (PDP), a method of forming the same, and a PDP including the protecting layer. The protecting layer includes a magnesium oxide-containing layer having a surface to which magnesium oxide-containing particles having a magnesium vacancy-impurity center (VIC) are attached. The protecting layer is resistant to plasma ions and has excellent electron emission effects, and thus, a PDP including the protecting layer can be operated at low voltage with high discharge efficiency.

Abstract: A protecting layer is formed of a magnesium oxide layer and electron emission promoting material formed on the magnesium oxide layer. The electron emission promoting material may be patterned on the magnesium oxide layer, or may be sprayed and heat-treated on the surface of the magnesium oxide layer. The protecting layer exhibits excellent electron emission characteristics while not being substantially damaged by plasma ions, thereby improving the reliability of a PDP.

Abstract: A protecting layer is formed of a magnesium oxide and at least one additional component selected from the group consisting of a copper component selected from copper and a copper oxide, a nickel component selected from nickel and a nickel oxide, a cobalt component selected from cobalt and a cobalt oxide, and an iron component selected from iron and an iron oxide; a composite for forming the protecting layer; a method of forming the protecting layer; and a plasma display panel including the protecting layer. The protecting layer, which is used in a PDP, protects an electrode and a dielectric layer from a plasma ion generated by a gaseous mixture of Ne and Xe, or He, Ne, and Xe, and discharge delay time and dependency of the discharge delay time on temperature can be decreased and sputtering resistance can be increased.

Abstract: A method of manufacturing a lower panel for a plasma display panel using X-rays which includes preparing a base substrate; forming a barrier rib material layer on the base substrate; defining barrier rib patterns by scanning X-rays on the barrier rib material layer; and developing the barrier rib material layer to form barrier ribs. Fine-pitch patterning of the barrier ribs can be achieved with high precision by using X-rays.

Abstract: The composition for a barrier rib of the present invention includes a metal oxide sol and a glass frit. The metal oxide sol includes a photoacid generator, and the difference between the average refractive index (N1) of the metal oxide sol and average refractive index (N2) of the glass frit satisfies the following Equation 1: ?0.2?N1?N2?0.

Abstract: The present invention relates to a dust recycling and re-treating system and a method for the same, and in particular, to a dust recycling and re-treating system and a method for the same, which produces dusts generated from an incinerating and melting processing equipment for hazardous wastes, particularly, radioactive wastes, in a slurry form, and recycles and re-treats them within an existing melting furnace.

Abstract: Photosensitive paste compositions, barrier ribs of plasma display panels (PDPs) prepared using the same, and PDPs including the barrier ribs are provided. The photosensitive paste composition includes an organic-inorganic complex sol and an inorganic material, wherein the average refractive index (N1) of the organic-inorganic complex sol and the average refractive index (N2) of the inorganic material satisfy the equation ?0.2?N1?N2?0.2. Using the photosensitive paste composition, patterned barrier ribs for PDPs having high resolution and high precision can be made by exposure to light only once. Barrier ribs having higher reflective indices than conventional barrier ribs can also be obtained.

Abstract: Photosensitive paste compositions, plasma display panels (PDP) manufactured using the same, and methods of manufacturing the PDPs are provided. In one embodiment, a photosensitive paste composition includes an inorganic component and an organic component, where the organic component includes a cross-linking agent including a monoacrylate, where the monoacrylate is present in an amount ranging from about 50 to about 100 weight % with respect to a total weight of the cross-linking agent. In another embodiment, a PDP is manufactured using the photosensitive paste composition. In yet another embodiment, a method of manufacturing the PDP is provided. The inventive photosensitive paste compositions can fundamentally prevent film twisting, disconnection or detachment by minimizing stress on the patterned film during sintering, thereby minimizing modifications due to shrinkage.

Abstract: The sintered magnesium oxide according to one embodiment has a density of less than 3.5 g/cm3 and an average grain size of about 3 to about 10 ?m. A MgO protective layer made from the sintered magnesium oxide reduces a discharge voltage of a plasma display panel, improves its response speed, and provides it with high-purity film quality.

Abstract: A material for preparing a protective layer for a PDP, which reduces discharge delay time, improves temperature dependency, and has enhanced ion strength; a method of preparing the same; a protective layer formed of the material; and a PDP including the protective layer. More particularly, a material for a protective layer that includes monocrystalline magnesium oxide doped with a rare earth element at an amount of 2.0×10?5?1.0×10?2 parts by weight per 1 part by weight of magnesium oxide (MgO), a method of preparing the monocrystalline magnesium oxide by crystallizing it at about 2,800° C., a protective layer formed of the same, and PDP including the protective layer.

Abstract: A sintered magnesium oxide has a density of 3.5 g/cm3 or more, and has a grain size that is more than or equal to thirty times the average particle diameter of magnesium oxide particles. An MgO protective layer made from the sintered magnesium oxide reduces a discharge voltage of a plasma display panel, improves response speed, and provides a high-purity film quality.

Abstract: A light emitting device includes: a first substrate; a second substrate; a light emitting unit interposed between the first substrate and the second substrate; and a sealing material bonding the first substrate to the second substrate and sealing the light emitting unit. The sealing material comprises V+4. In addition, a glass frit, a composition for forming a sealing material, and a method of manufacturing a light emitting device using the composition for forming a sealing material are provided to obtain the light emitting device. The sealing material of the light emitting device can be easily formed by coating and irradiation of electro-magnetic waves, so that manufacturing costs are low and deterioration of the light emitting unit occurring when sealing material is formed can be substantially prevented. The sealing material has good sealing properties and thus a light emitting device including the sealing material has a long lifetime.

Abstract: A method of manufacturing barrier ribs of a plasma display panel (PDP), and a method of manufacturing a lower panel for the PDP. The method of manufacturing the barrier ribs for the PDP includes: preparing a mold to shape the barrier ribs, which has a patterned surface; filling a plurality of channels formed in the mold with a barrier rib material, to form barrier ribs; and compression bonding a dielectric sheet to the barrier ribs in the mold. Using a molding process, a barrier rib pattern having a desired shape can be precisely formed, and an electrode burying layer with a uniform thickness can be obtained.

Abstract: A method of manufacturing a soft mold to shape a barrier rib, a method of manufacturing a barrier rib and a lower panel, and a plasma display panel (PDP) including the same. The method of manufacturing the soft mold includes: providing a metal mold on which a barrier rib pattern is formed, by alternating channels and projections; disposing a polymer sheet opposite the metal mold; pressing the metal mold into the polymer sheet, to form the soft mold, which has an inverted image of the barrier rib pattern formed on the surface thereof; and releasing the soft mold from the metal mold.

Abstract: A plasma display panel and a method of making thereof such that the plasma display panel includes a first substrate and a second substrate arranged opposite to each other; a plurality of address electrodes disposed on the first substrate; a dielectric layer disposed to cover the address electrodes disposed on the first substrate; a plurality of display electrodes disposed to cross the address electrodes on a second substrate; an inorganic oxide layer disposed to cover the display electrodes; an MgO protective layer disposed to cover the inorganic oxide layer; barrier ribs disposed between the first substrate and the second substrate to define a plurality of discharge cells; and phosphor layers disposed in the discharge cells.

Abstract: A photosensitive paste composition includes a metal oxide sol and an inorganic material, wherein the average light refractive index (N1) of the metal oxide sol and the average light refractive index (N2) of the inorganic material satisfy Equation 1 below. a barrier rib of a PDP prepared using the same and a PDP including the barrier rib: ?0.2?N1?N2?0.2.Equation 1 A barrier rib of a plasma display panel is prepared using the photosensitive past composition. Since a pattern of a barrier rib for a PDP having high resolution and high precision can be made by only a single exposure to light, and a barrier rib having a higher reflective index than a conventional barrier rib can also be provided, a PDP including the barrier rib can have a high luminance.